Thank you for reaching out to the Community. In QuickBooks, we keep your data for a year after you cancel your subscription. That said, you'll need to resubscribe to access it again.
If you decided to resubscribe again, You can run Tax summary report it's the perfect report for you to get the Schedule C data. Simply go to the Reports tab, then drop-down arrow and select 2019 tax year and click View.
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